Patents by Inventor W Davis Lee

W Davis Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200375559
    Abstract: The invention comprises a method and apparatus for imaging a tumor with X-rays while, simultaneously or alternatingly, treating or imaging the tumor with positively charged particles. An X-ray imaging system, such as one or two sets of a cone beam X-ray source coupled to an X-ray detector, is rotatable about a first axis and a patient. The X-ray imaging system is positioned off axis a path of charged particles delivered through an exit port of a nozzle system from a synchrotron and does not block a path of the positively charged particles from the exit nozzle to the patient or an imaging path from the patient to a scintillation detector. Fiducial indicators are used to confirm an unobstructed path of the positively charged particles in a treatment room comprising many movable elements, such as the X-ray imaging system and a patient positioning system/couch.
    Type: Application
    Filed: August 19, 2020
    Publication date: December 3, 2020
    Inventors: James P. Bennett, W. Davis Lee
  • Patent number: 10792517
    Abstract: The invention comprises a method and apparatus for determining state of a positively charged particle, such as a proton, for use in imaging a tumor of a patient prior to and/or concurrent with cancer therapy. The imaging system comprises: (1) a beam transport path of the positively charged particle sequentially passing through a patient, through a first time of flight detector, and, after traversing a pathlength, at least into a second time of flight detector and (2) a beam state determination system using elapsed time between detection at the first and second time of flight detectors and the pathlength to determine a residual beam energy, which, when compared to a known incident beam energy, is used in generation of an image of the tumor. An optional beam energy degrading element increases time differences between the time of flight detectors.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: October 6, 2020
    Inventors: W. Davis Lee, Scott Penfold, Mark R. Amato, Louis P. Wainwright
  • Publication number: 20200306560
    Abstract: The invention comprises a method and apparatus for treating a tumor of a patient, in a beam treatment center comprising a floor, with positively charged particles, comprising: (1) a synchrotron mounted to an elevated floor section above the floor of the beam treatment center; (2) a beam transport system, comprising: at least three fixed-position beam transport lines, where none of the synchrotron and the beam transport system penetrate through the floor of the beam treatment center; (3) the positively charged particles transported from the synchrotron, through the beam transport system, to a position above a patient positioning system during use; and (4) an optional repositionable nozzle system connected to a first, second, and third fixed-position beam transport line at a first, second, and third time, respectively, where the nozzle track forms an arc of a circle and the repositionable nozzle system moves along the nozzle track.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Inventors: Daniel J. Raymond, W. Davis Lee, James P. Bennett
  • Patent number: 10751555
    Abstract: The invention comprises a method and apparatus for treating a tumor of a patient, in a beam treatment center comprising a floor, with positively charged particles, comprising: (1) a synchrotron mounted to an elevated floor section above the floor of the beam treatment center; (2) a beam transport system, comprising: at least three fixed-position beam transport lines, where none of the synchrotron and the beam transport system penetrate through the floor of the beam treatment center; (3) the positively charged particles transported from the synchrotron, through the beam transport system, to a position above a patient positioning system during use; and (4) an optional repositionable nozzle system connected to a first, second, and third fixed-position beam transport line at a first, second, and third time, respectively, where the nozzle track forms an arc of a circle and the repositionable nozzle system moves along the nozzle track.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 25, 2020
    Inventors: Daniel J. Raymond, W. Davis Lee, James P. Bennett
  • Patent number: 10751551
    Abstract: The invention comprises a method and apparatus for directing protons to a tumor, comprising the steps of: (1) holding a patient with a patient support; (2) providing an imaging system comprising: a rotatable unit at least partially surrounding an axial perimeter of the patient support, a translation guide rail, an imaging source attached to the rotatable unit, and an imaging detector attached to the rotatable unit; (3) translating and rotating the imaging source and the imaging detector relative to the patient support using the translation guide rail and the rotatable unit; and (4) providing an attachment section connected: on a first end to a robotic arm positioning system and on a second end to the patient support and the imaging system, the robotic arm positioning system repositioning, relative to a nozzle system linked to the synchrotron, the attachment system supporting the patient support system and the imaging system.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: August 25, 2020
    Inventors: James P. Bennett, W. Davis Lee, Mark R. Amato, Jillian Reno, Nick Ruebel, Susan L. Michaud
  • Patent number: 10751554
    Abstract: The invention comprises a method and apparatus for using a turning magnet of an accelerator of a cancer therapy system, the accelerator comprising first magnet coils and second correction coils wound about a magnet core where: (1) at a first time, the second correction coils are used to correct a magnetic field, resultant from the first magnet coils, used to turn cations and (2) at a second time, after reversing polarity of the correction coils, the correction coils are used to turn anions and/or electrons, the cations and electrons used to treat a tumor of a patient positioned in a treatment position relative to a treatment beam from the accelerator during the first and second time periods.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 25, 2020
    Inventors: Scott Penfold, Mark R. Amato, W. Davis Lee
  • Patent number: 10684380
    Abstract: Generally, a method or apparatus for tomographically imaging a sample, such as a tumor of a patient, using positively charged particles positions n two-dimensional detector arrays on n surfaces of a scintillation material or scintillator, respectively. Resultant from energy transfer from the positively charged particles, secondary photons are emitted from the scintillation material and detected by the plurality of two-dimensional detector arrays, where each detector array images the scintillation material. Combining signals from the plurality of two-dimensional detector arrays, the path, position, energy, and/or state of the positively charged particle beam as a function of time and/or rotation of the patient relative to the positively charged particle beam is determined and used in tomographic reconstruction of an image of the sample or the tumor.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: June 16, 2020
    Inventors: W. Davis Lee, Mark R. Amato
  • Patent number: 10638988
    Abstract: The invention comprises an apparatus and method of use thereof for using a single patient position during, optionally simultaneous, X-ray imaging and positively charged particle imaging, where imaging a tumor of a patient using X-rays and positively charged particles comprises the steps of: (1) generating an X-ray image using the X-rays directed from an X-ray source, through the patient, and to an X-ray detector, (2) generating a positively charged particle image: (a) using the positively charged particles directed from an exit nozzle, through the patient, through the X-ray detector, and to a scintillator, the scintillator emitting photons when struck by the positively charged particles and (b) generating the positively charged particle image of the tumor using a photon detector configured to detect the emitted photons, where the X-ray detector maintains a position between said the nozzle and the scintillator during the step of generating a positively charged particle image.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: May 5, 2020
    Inventors: Scott Penfold, Mark R. Amato, Edward Ivanov, Jillian Reno, Nick Ruebel, Stephen Sledge, Lauri Reichert, Kyle Schmanke, W. Davis Lee, James P. Bennett
  • Patent number: 10625097
    Abstract: The invention comprises a method for treating a tumor of a patient with positively charged particles in a treatment room, comprising the steps of: (1) controlling a cancer therapy treatment system with a main controller, the main controller comprising hardware and software; (2) generating at least one image of the tumor using at least one imaging system controlled by the main controller; (3) using the at least one image and a software coded set of radiation treatment directives, the main controller auto-generating a radiation treatment plan; and (4) the main controller auto-delivering the positively charged particles, via a beam transport system and a nozzle system, from a synchrotron to the tumor according to the radiation treatment plan.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: April 21, 2020
    Inventors: Jillian Reno, Mark R. Amato, Susan L. Michaud, James P. Bennett, Nick Ruebel, W. Davis Lee
  • Patent number: 10589128
    Abstract: The invention comprises a method and apparatus for treating a tumor of a patient using positively charged particles, comprising the steps of: (1) providing an approved current version of a radiation treatment plan for treatment of the tumor using the positively charged particles; (2) implementing the current version of the radiation treatment plan using a cancer therapy system comprising a controller linked to a synchrotron; (3) upon identifying an object, using a set of fiducial indicators, in a treatment vector of the radiation treatment plan: generating a modified version of radiation treatment plan and receiving medical doctor approval of the modified version of the radiation treatment plan, the modified version of the radiation plan becoming the current version of the radiation treatment plan; and (4) repeating the steps of implementing and identifying until completion of treatment of the tumor using the positively charged particles.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: March 17, 2020
    Inventors: Susan L. Michaud, Jillian Reno, Nick Ruebel, Mark R. Amato, W. Davis Lee, James P. Bennett
  • Patent number: 10555710
    Abstract: The invention comprises a method and apparatus for imaging a tumor with X-rays while, simultaneously or alternatingly, treating or imaging the tumor with positively charged particles. An X-ray imaging system, such as one or two sets of a cone beam X-ray source coupled to an X-ray detector, is rotatable about a first axis and a patient. The X-ray imaging system is positioned off axis a path of charged particles delivered through an exit port of a nozzle system from a synchrotron and does not block a path of the positively charged particles from the exit nozzle to the patient or an imaging path from the patient to a scintillation detector. Fiducial indicators are used to confirm an unobstructed path of the positively charged particles in a treatment room comprising many movable elements, such as the X-ray imaging system and a patient positioning system/couch.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: February 11, 2020
    Inventors: James P. Bennett, W. Davis Lee
  • Patent number: 10556126
    Abstract: The invention comprises a method for generating a procedure for treating a tumor of a patient using positively charged particles, comprising the steps of: (1) providing a set of treatment goal specifications; (2) generating tomographic images of the tumor using a first set of groups of the positively charge particles delivered from a synchrotron; and (3) a computer implemented algorithm automatically generating a tumor radiation treatment plan, of the tumor using the positively charged particles, using the set of treatment goal specifications and the tomographic images. Optionally, the method automatically updates the radiation treatment plan upon: a detected movement of the tumor relative to surrounding patient constituents and/or upon detection of a previously unforeseen intervening object in a treatment beam path.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: February 11, 2020
    Inventors: Mark R. Amato, Susan L. Michaud, James P. Bennett, Jillian Reno, W. Davis Lee, Nick Ruebel
  • Publication number: 20200037825
    Abstract: The invention comprises a method and apparatus for delivery of a product, such as whipped cream, from a pressurized container containing a deformable bladder, the deformable bladder separating a main compartment of the pressurized container into a pressure reserve zone and a pressurized delivery zone, where a membrane in the pressure reserve zone initially separates first chemical reagents from second chemical reagents. Upon a force creating an opening in the membrane, a reaction of the chemical reagents forms a gas, which alters a volume of the deformable bladder and the volume of the pressurized delivery zone with a corresponding increase in pressure of a deliverable gas in the pressure delivery zone. A resulting increased pressure of the deliverable gas, which permeates cream, maintains quality of delivered whipped cream from the pressurized container.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Inventors: Christian T. Metcalfe, W. Davis Lee
  • Publication number: 20200038681
    Abstract: The invention comprises a method and apparatus for scanning charged particles in a cancer therapy system, comprising the steps of: (1) providing a first and second dipole magnet system and a gap, the gap comprising a common gap length, along a path of the charged particles, within both the first and second dipole magnet systems, the gap comprising a progressively increasing x/y-plane cross-section area from an entrance area of the charged particles into the double dipole magnet system to an exit area of the double dipole magnet system, the x/y-plane perpendicular to a z-axis from a center of the entrance area to a center of the exit area; (2) scanning the positively charged particles along a first axis of the x/y-plane using the first dipole magnet system; and (3) scanning the positively charged particles along a second axis of the x/y-plane using the second dipole magnet system.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Inventors: Faye Hendley Elgart, Nick Ruebel, Mark R. Amato, Nandish Desai, W. Davis Lee
  • Patent number: 10549124
    Abstract: The invention comprises a method and apparatus for treating a tumor with protons using multiple beamline positions not having an isocenter, including the steps of: (1) delivering the protons from a synchrotron along a redirectable beam transport path to yield a plurality of incident vectors, each of the plurality of incident vectors directed toward the treatment room and (2) redirecting the protons traveling along each of the plurality of incident vectors, with an output nozzle, to the tumor, where a first vector, of the plurality of incident vectors, comprises a first direction intersecting the tumor and where a second vector, of the plurality of incident vectors, comprises a second direction passing by the tumor without entering the tumor. The step of redirecting directs the protons traveling along the first and second incident vectors, respectively, to a first and second path intersecting a front and the back of the tumor.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: February 4, 2020
    Inventors: W. Davis Lee, Jillian Reno, James P. Bennett
  • Patent number: 10548551
    Abstract: The invention comprises a method or apparatus for tomographically imaging a sample, such as a tumor of a patient, using positively charged particles. Position, energy, and/or vectors of the positively charged particles are determined using a plurality of scintillators, such as layers of chemically distinct scintillators where each chemically distinct scintillator emits photons of differing wavelengths upon energy transfer from the positively charged particles. Knowledge of position of a given scintillator type and a color of the emitted photon from the scintillator type allows a determination of residual energy of the charged particle energy in a scintillator detector. Optionally, a two-dimensional detector array additionally yields x/y-plane information, coupled with the z-axis energy information, about state of the positively charged particles.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 4, 2020
    Inventors: W. Davis Lee, Mark R. Amato
  • Patent number: 10532228
    Abstract: The invention comprises a method and apparatus for using a multi-layer multi-color scintillation based detector element to image a tumor of a patient using a process of determining residual energies of positively charged particles after passing through the patient, the process comprising the steps of: (1) transmitting the positively charged particles at known energies through the patient and into a multi-layer detector element; (2) detecting first and second secondary photons, resultant from passage of the positively charged particles, respectively from a first layer of a first scintillation material and a second layer of a second scintillation material at two respective layer depths, where the first wavelength range differs from the second wavelength range; (4) determining residual energies of the positively charged particles, using output from the step of detecting; and (5) relating the residual energies to body densities to generate an image.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: January 14, 2020
    Inventors: Maureen Petterson, W. Davis Lee
  • Patent number: 10518109
    Abstract: The invention comprises a method and apparatus for determining a radiation beam treatment path to a tumor, comprising the steps of: (1) delivering charged particles from an accelerator, along a first beam transport path, through an output nozzle, and along a treatment path to the tumor relative to a calibrated reference beam path from the output nozzle toward a patient position and (2) prior to the step of delivering, a main controller verifying an unobstructed linear path of the treatment path using a set of fiducial indicators positioned at least: on a first element physically affixed and co-movable with the output nozzle and on a moveable object in the treatment room. Optionally, voxels of the treatment beam path and potentially obstructing objects are defined in the treatment room using an axis system relative to the calibrated reference beam path and a reference beam point.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: December 31, 2019
    Inventors: Jillian Reno, Susan L. Michaud, Nick Ruebel, Mark R. Amato, W. Davis Lee, James P. Bennett
  • Publication number: 20190374178
    Abstract: The invention comprises a method and apparatus for imaging a tumor with X-rays while, simultaneously or alternatingly, treating or imaging the tumor with positively charged particles. An X-ray imaging system, such as one or two sets of a cone beam X-ray source coupled to an X-ray detector, is rotatable about a first axis and a patient. The X-ray imaging system is positioned off axis a path of charged particles delivered through an exit port of a nozzle system from a synchrotron and does not block a path of the positively charged particles from the exit nozzle to the patient or an imaging path from the patient to a scintillation detector. Fiducial indicators are used to confirm an unobstructed path of the positively charged particles in a treatment room comprising many movable elements, such as the X-ray imaging system and a patient positioning system/couch.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 12, 2019
    Inventors: James P. Bennett, W. Davis Lee
  • Publication number: 20190366125
    Abstract: The invention comprises a method and apparatus for using a multi-layer multi-color scintillation based detector element to image a tumor of a patient using a process of determining residual energies of positively charged particles after passing through the patient, the process comprising the steps of: (1) transmitting the positively charged particles at known energies through the patient and into a multi-layer detector element; (2) detecting first and second secondary photons, resultant from passage of the positively charged particles, respectively from a first layer of a first scintillation material and a second layer of a second scintillation material at two respective layer depths, where the first wavelength range differs from the second wavelength range; (4) determining residual energies of the positively charged particles, using output from the step of detecting; and (5) relating the residual energies to body densities to generate an image.
    Type: Application
    Filed: August 12, 2019
    Publication date: December 5, 2019
    Inventors: Maureen Petterson, W. Davis Lee